CVE-2011-4723 D-Link DIR-300 Router: software flaw
In plain words: A mistake in the software that attackers have found a way to abuse. Depends on the product — see the description and the vendor advisory.
Confirmed exploited by CISA on · US federal patch deadline Sep 29, 2022
What to do
- Install D-Link's security update for DIR-300 Router. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Turn on automatic firmware updates and replace gear the maker no longer supports.
- Change default passwords and switch off remote administration and features you do not use.
- Do not put storage boxes or cameras directly on the internet — use the maker's app or a VPN.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: Taken over in bulk to join botnets, used to watch your traffic, or — for storage boxes — locked by ransomware.
The details
- Official name
- D-Link DIR-300 Router Cleartext Storage of a Password Vulnerability
- Product
- D-Link DIR-300 Router
- CISA description
- The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information.
- Type of flaw
- Software flaw (CWE-310)
- Confirmed exploited
- Sep 8, 2022
- US federal patch deadline
- Sep 29, 2022
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Answering about CVE-2011-4723 ·
Questions about CVE-2011-4723
Is CVE-2011-4723 being exploited?
Yes. CISA added CVE-2011-4723 to its Known Exploited Vulnerabilities catalog on Sep 8, 2022, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2011-4723?
Install D-Link's security update for DIR-300 Router. If no update exists, follow the vendor's workaround or stop using the product until one ships. Turn on automatic firmware updates and replace gear the maker no longer supports.
Am I affected by CVE-2011-4723?
Only if you use D-Link DIR-300 Router. This one is aimed at devices or apps of the kind people own.